/*
 * Copyright 2020 the original author or authors.
 *
 * Licensed under the Apache, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at  http://www.gnu.org/licenses/lgpl-2.0.html
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.jn.sqlhelper.datasource.supports.spring.aop;

import com.jn.sqlhelper.datasource.key.DataSourceKey;
import com.jn.sqlhelper.datasource.key.MethodDataSourceKeyRegistry;
import com.jn.sqlhelper.datasource.key.MethodInvocationDataSourceKeySelector;
import org.aopalliance.intercept.MethodInterceptor;
import org.aopalliance.intercept.MethodInvocation;

/**
 * 只是用来解析注解，不能调用select方法
 * @since 3.4.0
 */
public class DataSourceKeyChoicesAnnotationMethodInterceptor implements MethodInterceptor {

    private MethodDataSourceKeyRegistry keyRegistry;

    @Override
    public Object invoke(MethodInvocation invocation) throws Throwable {
        DataSourceKey key = keyRegistry.get(invocation.getMethod());
        if (key != null) {
            MethodInvocationDataSourceKeySelector.addChoice(key);
            try {
                return invocation.proceed();
            } finally {
                MethodInvocationDataSourceKeySelector.removeChoice(key);
            }
        } else {
            return invocation.proceed();
        }
    }

    public void setKeyRegistry(MethodDataSourceKeyRegistry keyRegistry) {
        this.keyRegistry = keyRegistry;
    }
}
